Why Didn’t They Ask Evans?

The first British TV foray into Agatha Christie territory since an occasional BBC play series of the 1940s. LWT had initially wanted to produce a Miss Marple story, but this clashed with a movie production of The Mirror Crack'd and so Christie's 1934 novel 'Why Didn't They Ask Evans?' was chosen for adaptation instead. James Warwick and Francesca Annis played amateur investigators Bobby Jones and Lady Frances Derwent, alongside guest stars of the calibre of Eric Porter and Sir John Gielgud. Critics feel that the production owes more to LWT's own period dramas like Upstairs Downstairs than to Christie.